Communication Device Echo Signal Management via Polarization
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Solution Overview
Problem
Conventional communication devices face limitations in signal transmission range and coverage due to directional RF signals and obstructions, leading to echo signals that cause self-interference and degrade signal-to-noise ratio (SNR), particularly in highly reflective environments.
Innovation Solution
A communication device that employs polarization and a change in radiation pattern to maximize signal coverage and minimize echo signals, using a combination of digital modem circuitry, phased array antennas, and control circuitry for echo detection and suppression, adjusting forward gain and polarization to optimize RF signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional communication devices transmit RF signals in highly directional beams to enhance capacity, then signal transmission efficiency is improved, but transmission range and coverage are limited and echo signals are generated
Solution Approach 1:
The patent segments the RF signal transmission into multiple directional beams that can be dynamically steered and adjusted. Instead of using a single fixed directional beam, the system divides the coverage area into multiple sectors and transmits signals through multiple beams that can be independently controlled, thereby extending overall coverage while maintaining transmission efficiency.
Solution Approach 2:
The patent implements dynamic beamforming and beam steering capabilities that allow the transmission beams to adaptively change direction and shape based on real-time channel conditions. This dynamic adjustment enables the system to extend coverage area by directing beams toward different spatial locations while maintaining high transmission efficiency through optimized beam patterns.
2Area of stationary object
If signal boosting is performed to increase transmission range, then coverage is extended, but echo signals are generated that cause self-interference and degrade SNR
Solution Approach 1:
The patent converts the harmful echo signals into useful information by detecting and analyzing the reflected signals. The system uses the echo signals to identify reflective surfaces and their characteristics, then applies this information to adjust beamforming weights and steering directions to minimize the impact of echoes on the received signal, thereby transforming the harmful interference into a source of channel state information.
Solution Approach 2:
The patent implements feedback mechanisms that continuously monitor the received signals for echo components and adjust the transmission parameters accordingly. By detecting echo signals and feeding this information back to the beamforming controller, the system can dynamically adjust beam patterns and power allocation to reduce self-interference and maintain high SNR while extending coverage.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively suppresses echo signals, improving SNR and extending signal coverage even in highly reflective environments, ensuring stable communication systems for both current and future wireless networks.
Implementation Method 1
transmit a second beam of RF signals in a first radiation pattern
Implementation Method 2
echo signals corresponding to reflected RF signals in an environment surrounding the communication device
Implementation Method 3
apply polarization to the second beam of RF signals transmitted to the UE and further calibrate the polarization such that the echo signals at the donor Rx are minimized
Data Source
AI summary
A communication device includes a donor receiver that receives a first beam of input radio frequency (RF) signals from a base station or a network node. The communication device further includes a service transmitter that transmits a second beam of RF signals in a first radiation pattern to a user equipment (UE). The communication device further includes control circuitry that detects an amount and a direction of echo signals at the donor receiver. The control circuitry applies polarization to the second beam of RF signals transmitted to the UE and calibrates the polarization to minimize the echo signals at the donor receiver. A second radiation pattern is generated for the second beam of RF signals and communicated to the UE based on the calibrated polarization. The communication of the second beam of RF signals in the generated second radiation pattern further reduces the echo signals at the donor receiver.